Cleaning compound for metals.



UNITED STAT E S PATENT OFFICE.

GEORGE D. FEIDT, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOB TO ERICA! CHEMICAL PAINT COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A OOH-PO- TION OF DELAWARE CLEANING COMPOUND FOB. IETALS.

Io Drawing.

To all whom it may concern:

Be it known that I, Gnomes D. Faun, a citizen of the United States, and a resident of Philadel hia, in the county of Philadelphia and tate of Pennsylvania, have mvented a certain new an useful Cleaning Compound for Metals, of which the followis a s ification. qhe principal object of the present nvention is to provide a satisfactory, easil applied, comparative] inexpensive and e ficient detergent or c caning com and for cleaning metals and preventing em from rusting or corroding both before and after pamtmg.

Although the compound or detergent may be used in connection with almost any of the commercial metals, it is ially useful in treating steel and iron, w ch are more liable to corrosion than any other commercial metals. t

I have discovered that steel and like metals may be cleaned to great advantage by means of an admixture of denatured alcoholand orthophosphoric acid. This compound or admixture of alcohol and phos phoric acid not only attacks the steel, leava clean bright surface, but also chemi- Zfiy acts on obnoxious substances, such as oil and grease, perspiration, soldering fluids, moisture, etc., cha them into harmless bodies which are i' eifiy wiped awa when the el'eaning operation is com is The compound or admixt dissolves m s I rust and thin coatings of oxi an penetrates all crac and crevices, rodu a totally clean swfiace that is fro froni tk ndency to rust. Steel surfaces treated b my detergent are in excellent condition or receiving and retaining acoat of paint. Steel cleaned by my detergent or admixture and then painted will not rust, because the paint comes into actual and intimate contact with the surface of the steel and is not separated from it by rust forming or other deleterious bodies, such as moisture, oil, grease, solderin fluids, etc.

y cleaning composition, compound or Specification of utter. Patent.

Application llled September 14', 1814. Serial No. 861,560.

Patented Dec. 1. 1914.

manufacture is made by mixing orthophosphoric acid and denatured alcohol. As a result of this heat is liberated and an alcoholic phosphate is formed and an excess of alcohol is added so that the resulting compound is an alcoholic phosphate dissolved in alcohol.

The proportion of the acid to the alcohol I may be varied to a great extent provided there is suflicient alcohol to complete the chemical reaction with total amount of the acid,that is. the excess of alcohol may be varied to suit conditions. A large excess of alcohol produces a thin liquid that easily penetrates all cracks and seams but acts rather slowly whereas a small excess makes a more viscous liquid that acts quickly. I

l volume of carbon tetrachlorid.

y the addition of suitable. quantities of carbon tetrachlorid, say by The described composition of matter or admixture may be used by inting the metal with it and then after tK: lapse of a few minutes, durin which it can act, the metal is wiped. len the metal is dry it can be painted or if the metal is protected from the elements it need not be painted until after the lapse of several months.

What I claim is:

1. A cleaning agent for metals consisting of an admixture of orthophosphoric acid and denatured alcohol.

2. A cleaning agent for steel consisting of an admixture of phosphoric acid, alcohol and carbon tetrachiorid.

In testimony whereof I have hereunto s' ed m name.

lgn y GEORGE D. FEIDT.

Witnesses:

J. H. Cross-x, J. T. F aro'r. 

